P-Block Quiz-4
Dear Readers,
The one subject in NEET which is candidates who can easily attain good marks is Chemistry. That's the reason, often, one doesn’t pay notice and choose to compromise it. But if one wants to rank above others, the tip is to be thorough with NEET chemistry concepts. The understanding of reactions and definite basic understanding is what requires major attention in Chemistry but once done it only gets simpler from there. The main focus on the to-do list should be on getting a hang of the NCERT syllabus of NEET chemistry..
Q1. On doping Ge metal with a little of ln, one gets:
Solution
Doping of gp.13 element (In) with Ge (gp.14 element) causes -type semiconductor. Doping of gp.15 element (As) with Ge (gp.14 element) causes -type semiconductor.
Doping of gp.13 element (In) with Ge (gp.14 element) causes -type semiconductor. Doping of gp.15 element (As) with Ge (gp.14 element) causes -type semiconductor.
Q2.Which property is common in diamond and graphite?
Solution
Both have at. wt. equal to 12.
Both have at. wt. equal to 12.
Q3. 
on hydrolysis will produce
on hydrolysis will produce 
Solution
on hydrolysis will produce 
as follows is unstable compound and it loses water molecule to give 
. But silicon atom because of its very large size in comparison to oxygen, is unable to form π-bond. Thus, the product of hydrolysis is polymeric in nature.
on hydrolysis will produce 
as follows is unstable compound and it loses water molecule to give 
. But silicon atom because of its very large size in comparison to oxygen, is unable to form π-bond. Thus, the product of hydrolysis is polymeric in nature.
Q4. Least stable hydride is :
Solution
The stability and basic character of hydrides decreases down the group.
The stability and basic character of hydrides decreases down the group.
Q5.The bonds present in borazole are:
Solution
Inorganic benzene is borazole or
having structure similar to 
, i.e.,
Inorganic benzene is borazole or
having structure similar to 
, i.e.,
Q6. Which type of silicate is shown in the given figure?
Solution
When two oxygen of each
tetrahedron are shared with others, cyclic or ring structures are obtained. These silicates are known as cyclosilicates or cyclic silicates. 
is an example of cyclosilicate. In this silicate six 
tetrahedra linked together.
When two oxygen of each
tetrahedron are shared with others, cyclic or ring structures are obtained. These silicates are known as cyclosilicates or cyclic silicates. 
is an example of cyclosilicate. In this silicate six 
tetrahedra linked together.
Q7.Which fuel has the highest calorific value?
Solution
Calorific values are: Coal gas = 450−560
(British thermal unit per cubic feet); water gas = 310 ; producer gas = 103; CO= 0.
Calorific values are: Coal gas = 450−560
(British thermal unit per cubic feet); water gas = 310 ; producer gas = 103; CO= 0.
Q8.
acts as acid according to:
acts as acid according to:
Solution
It can accept lone pair of electron.
It can accept lone pair of electron.
Q9.Aluminium metal is corroded in coastal places near to the sea, because protective oxide film:
Solution
It is a reason for given fact.
It is a reason for given fact.
Q10. Which of the following is pseudoalum?
-
-
-
- None of the above
Solution
General formula of alum is,
General formula of alum is,
